diff --git a/.github/actions/test-helloworld/action.yml b/.github/actions/test-helloworld/action.yml
index 76b92a70..9ce49ef9 100644
--- a/.github/actions/test-helloworld/action.yml
+++ b/.github/actions/test-helloworld/action.yml
@@ -1,11 +1,11 @@
-name: 'Test Hello World'
-description: 'Test Hello World with specific Go and module versions'
+name: "Test Hello World"
+description: "Test Hello World with specific Go and module versions"
 inputs:
   go-version:
-    description: 'Go version being tested'
+    description: "Go version being tested"
     required: true
   mod-version:
-    description: 'Go module version to use'
+    description: "Go module version to use"
     required: true
 runs:
   using: "composite"
@@ -24,12 +24,30 @@ runs:
         import (
           "fmt"
           "github.com/goplus/lib/c"
+          "github.com/goplus/lib/cpp/std"
         )
         func main() {
             fmt.Println("Hello, LLGo!")
             println("Hello, LLGo!")
             c.Printf(c.Str("Hello, LLGo!\n"))
+            c.Printf(std.Str("Hello LLGo by cpp/std.Str\n").CStr())
         }
         EOL
         go mod tidy
-        llgo run .
+        EXPECTED="Hello, LLGo!
+        Hello, LLGo!
+        Hello, LLGo!
+        Hello LLGo by cpp/std.Str"
+        OUTPUT=$(llgo run . 2>&1)
+        if echo "$OUTPUT" | grep -qF "$EXPECTED"; then
+            echo "Basic test passed"
+        else
+            echo "Basic test failed"
+            echo "Expected to contain:"
+            echo "$EXPECTED"
+            echo "Got:"
+            echo "$OUTPUT"
+            exit 1
+        fi
+
+        #TODO(zzy): Test embed targets, need dispatch target dir
diff --git a/.github/workflows/release-build.yml b/.github/workflows/release-build.yml
index 9e320358..c678d7df 100644
--- a/.github/workflows/release-build.yml
+++ b/.github/workflows/release-build.yml
@@ -27,7 +27,7 @@ jobs:
         if: steps.cache-darwin-sysroot.outputs.cache-hit != 'true'
         run: tar -czvf .sysroot/darwin.tar.gz -C .sysroot darwin
       - name: Save Darwin sysroot cache
-        # if: steps.cache-darwin-sysroot.outputs.cache-hit != 'true'
+        if: steps.cache-darwin-sysroot.outputs.cache-hit != 'true'
         uses: actions/cache/save@v4
         with:
           path: .sysroot/darwin.tar.gz
@@ -171,7 +171,7 @@ jobs:
           ls -la release-llgo/
           echo "${{ github.workspace }}/release-llgo/bin/" >> $GITHUB_PATH
 
-      - name: Test Hello World with go.mod 1.21
+      - name: Test Hello World
         uses: ./.github/actions/test-helloworld
         with:
           go-version: ${{matrix.go-version}}